Boom Seal Kit Description
The 31Y1-21100 boom cylinder seal kit is engineered for Hyundai R320-7 and R320LC-7 excavators, providing a complete sealing solution for boom hydraulic cylinders. This kit includes rod seals, piston seals, dust wipers, and O-rings, all designed to restore hydraulic performance and extend cylinder service life.
Manufactured under strict quality control, each component is designed to meet or exceed OEM standards, ensuring reliable sealing under high pressure and heavy-duty working conditions. The materials used are selected for resistance to wear, heat, and hydraulic oil, making it suitable for demanding construction environments.
This boom cylinder repair kit is widely used in hydraulic system maintenance, helping reduce downtime and maintenance costs for equipment owners and fleet operators. As a professional supplier, YNF Machinery ensures stable quality and consistent supply for B2B buyers who require bulk purchasing and long-term cooperation.
Boom Cylinder Seal Kit Technical Data Sheet
| Item |
Specification |
| Product Name |
Boom Cylinder Seal Kit |
| Part Number |
31Y1-21100 |
| YNF Number |
YNF18310 |
| Machine Model |
Hyundai R320-7 / R320LC-7 |
| Application |
Boom hydraulic cylinder repair |
| Material |
PU, NBR, PTFE |
| Seal Type |
Rod seal, piston seal, wiper seal, O-ring |
| Installation Position |
Boom hydraulic cylinder |
| Brand |
YNF |
| Origin |
China |
| MOQ |
1 set |
| Payment Terms |
T/T, L/C, Western Union |
| Shipping |
Air, Sea, Express |
| Delivery Time |
3–7 days (in stock) |
| Packaging |
Standard export packaging |
Boom Seal Kit Applications
| Application Area |
Description |
| Construction Machinery |
Excavators used in earthmoving and construction projects |
| Mining Equipment |
Heavy-duty excavators in mining operations |
| Infrastructure Projects |
Road, bridge, and building construction equipment |
| Hydraulic Maintenance |
Cylinder repair and sealing system overhaul |
| Equipment Refurbishment |
Used in reconditioning excavator hydraulic systems |
R320-7 Boom Seal Kit Detail Display
FAQ:
Q1: Is this seal kit compatible with R320LC-7?
Yes, it is fully compatible with Hyundai R320-7 and R320LC-7 models using part number 31Y1-21100.
Q2: What is included in the kit?
The kit includes rod seals, piston seals, dust seals, and O-rings required for full cylinder repair.
Q3: Can bulk orders be supported?
Yes, YNF Machinery supports wholesale and OEM supply for distributors and repair shops.
Q4: How long is the service life?
Service life depends on working conditions, but high-quality materials ensure long-term sealing performance under heavy-duty use.
